Chair arm



FIG. 1 is a front right perspective view of a chair arm embodying our new design.

FIG. 2 is a front elevational view thereof.

FIG. 3 is a rear elevational view thereof.

FIG. 4 is a right side elevational view thereof, the left side elevational view being a mirror image of such right side view.

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof. 

We claim the ornamental design for a chair arm, as shown and described. 